Refactor WebGPU buffer creation helpers to remove Try

Author: JimBobSquarePants

src/ImageSharp.Drawing.WebGPU/WebGPUDrawingBackend.Readback.cs

@@ -108,11 +108,6 @@ public void ReadRegion<TPixel>(
             };
 
             readbackBuffer = api.DeviceCreateBuffer(device, in bufferDescriptor);
-            if (readbackBuffer is null)
-            {
-                throw new InvalidOperationException("The WebGPU device could not create a readback buffer.");
-            }
-
             CommandEncoderDescriptor encoderDescriptor = default;
             commandEncoder = api.DeviceCreateCommandEncoder(device, in encoderDescriptor);
             if (commandEncoder is null)

src/ImageSharp.Drawing.WebGPU/WebGPUFlushContext.cs

@@ -223,12 +223,11 @@ private WebGPUFlushContext(
     /// </summary>
     /// <param name="requiredBytes">The required number of bytes for the current flush.</param>
     /// <param name="minimumCapacityBytes">The minimum allocation size to enforce when creating a new buffer.</param>
-    /// <returns><see langword="true"/> if the buffer is available with sufficient capacity; otherwise <see langword="false"/>.</returns>
-    public bool EnsureInstanceBufferCapacity(nuint requiredBytes, nuint minimumCapacityBytes)
+    public void EnsureInstanceBufferCapacity(nuint requiredBytes, nuint minimumCapacityBytes)
     {
         if (this.InstanceBuffer is not null && this.InstanceBufferCapacity >= requiredBytes)
         {
-            return true;
+            return;
         }
 
         if (this.InstanceBuffer is not null)
@@ -247,13 +246,7 @@ public bool EnsureInstanceBufferCapacity(nuint requiredBytes, nuint minimumCapac
 
         using WebGPUHandle.HandleReference deviceReference = this.DeviceHandle.AcquireReference();
         this.InstanceBuffer = this.Api.DeviceCreateBuffer((Device*)deviceReference.Handle, in descriptor);
-        if (this.InstanceBuffer is null)
-        {
-            return false;
-        }
-
         this.InstanceBufferCapacity = targetSize;
-        return true;
     }
 
     /// <summary>

src/ImageSharp.Drawing.WebGPU/WebGPURuntime.DeviceSharedState.cs

@@ -651,6 +651,5 @@ private sealed class CompositeComputePipelineInfrastructure
 
             public ComputePipeline* Pipeline { get; set; }
         }
-
     }
 }